Thank you for posting your query.
First of all, you do not require long term antiepileptic drugs, if your seizures were chemo related.
I agree with you that lamotrigine
should be gradually tapered off and stopped. Typically, you can reduce 25% of the dose per week and you can come off it in four weeks time.
Dr Sudhir Kumar MD DM (Neurology)
Senior Consultant Neurologist